Science Exam - Motion Flashcards
Motion
Q: Define net force.
A: The overall force acting on an object when all individual forces are combined.
Q: How do you interpret a free-body diagram?
A: By analyzing the forces acting on an object and determining the net force and resulting motion.
Q: What is a scalar quantity? Give examples.
A: Scalars have magnitude only, such as distance and speed.
Q: Define a vector quantity. Give examples.
A: Vectors have both magnitude and direction, such as displacement and velocity.
Q: What is acceleration?
A: The rate of change of velocity over time.
Q: State Newton’s First Law of Motion.
A: An object remains at rest or in uniform motion unless acted upon by an external force.
Q: How do you calculate motion using the triangle formulas?
A: Use the formula triangle to rearrange the speed formula: Speed = Distance ÷ Time.
Q: What is inertia?
A: The tendency of an object to resist changes in its motion.
Q: State Newton’s Second Law of Motion and the formula associated with it.
A: Force = Mass × Acceleration (F = ma).
Q: Explain Newton’s Third Law of Motion.
A: For every action, there is an equal and opposite reaction.
Q: What is the difference between gravity and weight?
A: Gravity is a force of attraction between masses, while weight is the force of gravity on an object’s mass.
